Design and Analysis of Quality Information for Data Warehouses
نویسندگان
چکیده
Data warehouses are complex systems that have to deliver highly-aggregated, high quality data from heterogeneous sources to decision makers. Due to the dynamic change in the requirements and the environment, data warehouse system rely on meta databases to control their operation and to aid their evolution. In this paper, we present an approach to assess the quality of the data warehouse via a semantically rich model of quality management in a data warehouse. The model allows stakeholders to design abstract quality goals that are translated to executable analysis queries on quality measurements in the data warehouse’s meta database. The approach is being implemented using the ConceptBase meta database system.
منابع مشابه
Applying the i* Framework to the Development of Data Warehouses
Data warehouse design has been traditionally guided by an in-depth analysis of the underlying operational data sources, thus overlooking an explicit stage in which information requirements of decision makers are addressed. This scenario has prompted that the deployed data warehouse often fails in delivering the expected support of the decision making process. To overcome this problem, we propos...
متن کاملPerspectives of Big Data Quality in Smart Service Ecosystems (Quality of Design and Quality of Conformance)
Despite the increasing importance of data and information quality, current research related to Big Data quality is still limited. It is particularly unknown how to apply previous data quality models to Big Data. In this paper we review Big Data quality research from several perspectives and apply a known quality model with its elements of conformance to specification and design in the context o...
متن کاملData Quality Management in Web Warehouses using BPM
The increasing amount of data published on the Web poses the new challenge of making possible the exploitation of these data by different kinds of users and organizations. Additionally, the quality of published data is highly heterogeneous and the worst problem is that it is unknown for the data consumer. In this context, we consider Web Warehouses (WW) (Data Warehouses populated by web data so...
متن کاملFinding efficient frontier of process parameters for plastic injection molding
Product quality for plastic injection molding process is highly related with the settings for its process parameters. Additionally, the product quality is not simply based on a single quality index, but multiple interrelated quality indices. To find the settings for the process parameters such that the multiple quality indices can be simultaneously optimized is becoming a research issue and ...
متن کاملImproving the Data Warehouse Architecture Using Design Patterns
Data warehousing is an important part of the enterprise information system. Business intelligence (BI) relies on data warehouses to improve business performance. Data quality plays a key role in BI. Source data is extracted, transformed, and loaded (ETL) into the data warehouses periodically. The ETL operations have the most crucial impact on the data quality of the data warehouse. ETL-related ...
متن کامل